8 ideas
11211 | If a sound conclusion comes from two errors that cancel out, the path of the argument must matter [Rumfitt] |
11210 | Standardly 'and' and 'but' are held to have the same sense by having the same truth table [Rumfitt] |
11212 | The sense of a connective comes from primitively obvious rules of inference [Rumfitt] |
14797 | Vagueness is a neglected but important part of mathematical thought [Peirce] |
14798 | All communication is vague, and is outside the principle of non-contradiction [Peirce] |
8090 | Since the language of thought is the same for all, it must be something like logical form [Fodor, by Devlin] |
11143 | If concept-learning is hypothesis-testing, that needs innate concepts to get started [Fodor, by Margolis/Laurence] |
11214 | We learn 'not' along with affirmation, by learning to either affirm or deny a sentence [Rumfitt] |